my question is how to make their isolatoin level become read committed between the two factories, for example:OpenSessoin from SFA - update a record in Table A, but the modified data has not been committed yet.

Open Session SFB - retrieve reocrd from Table A, it return the moifided record, but the record has not commited yet (i expect it only return the committed data only)

following is my hibernate config xml, which is used to initialize both SFA and SFB: